Whats the difference between intel Dual-Core and Core 2 Duo?

"http://en.wikipediadotorg/wiki/Pentium_Dual-Core

The Intel Dual Core is its own product line of Intel processors.

http://en.wikipediadotorg/wiki/Intel_Core_2

The Intel Core 2 is also another product line of Intel processors.

The pentium dual-core processor is a one of Intel's value or basic processors available. That is why you save so much going with that processor. The Core 2 is the more powerful desktop processor from Intel, hence why you pay more for it.

Here is a review comparing performance between the two: (This is well put together)

http://expertester.wordpress.com/2008/05/30/core-2-duo-vs-pentium-dual-core/

And a forum discussion about the differences:

http://www.devhardware.com/forums/intel-processors-30/pentium-dual-core-vs-core-2-duo-188459.html

I assume you mean the difference like on this inspiron 537 between the two middle models:

http://www.dell.com/content/products/productdetails.aspx/desktop-inspiron_537s?c=us&cs=19&l=en&s=dhs

If you notice next to the processor names is the intel e5200 and the intel e7500. These are the processor numbers you can look up on the internet for futher specifications and reviews.

The E5200 is listed under the Pentium Processor for Desktop on intel's website:

http://processorfinder.intel.com/List.aspx?ParentRadio=All&ProcFam=2841&SearchKey=

The E7500 is listed under the Core 2 Duo Desktop Processor

http://processorfinder.intel.com/List.aspx?ParentRadio=All&ProcFam=2558&SearchKey=E7500"

"The Core 2 Duo has two cores inside a single physical package. The Core 2 Quad has four cores in its package. In applications that utilize multithreading, such as Photoshop or video editing, you will see a tremendous improvement over a Core 2 Duo at the same clock speed. In single-threaded applications, there will be less of an improvement.

from http://wiki.answers.com/Q/What_is_the_difference_between_an_Intel_Core_2_Duo_and_an_Intel_Core_2_Quad

And

dual core is 2 cpu in a package

2 cpu's in a die = 2 cpu's made together
2 cpu's in package = 2 cpu's on small board or linked in some way

core 2 duo = brand name of certain kind of cpu like pentium or amd atholon"